Yes it's ok to use a modern value that's close to the original cap. All caps have tolerance anyway.
Resistors are the same way. Plus or minus 10% or more doesn't make a difference in radio operation.
Keeping the same value filament dropping resistor is a good idea. This controls voltage to each tube filament. Even these resistors have a tolerance. With higher line voltage you may want to increase a 970 ohm wire wound to 1000 ohms or more. Adjust until filament is around 1.4 volts.
Norm
:When replacing caps in a radio is it ok to vary values from the originals. ie originals are .04 and .05, should I use .047(common value) for both or are there cases where I need to keep things exact. I know in transocianics you have to keep the filament resistors exactly at 970ohms so you have to use parallel resistance to math them up.